55512205 has 16 divisors (see below), whose sum is σ = 80138880. Its totient is φ = 36061632.

The previous prime is 55512187. The next prime is 55512221. The reversal of 55512205 is 50221555.

It is a happy number.

55512205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 55512205 - 2⁷ = 55512077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55512205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41074 + ... + 42403.

It is an arithmetic number, because the mean of its divisors is an integer number (5008680).

Almost surely, 2^55512205 is an apocalyptic number.

It is an amenable number.

55512205 is a deficient number, since it is larger than the sum of its proper divisors (24626675).

55512205 is a wasteful number, since it uses less digits than its factorization.

55512205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83508.

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 55512205 is about 7450.6513138114. The cubic root of 55512205 is about 381.4721403618.

The spelling of 55512205 in words is "fifty-five million, five hundred twelve thousand, two hundred five".